⚡ 本页包含 AI 生成的分析内容，仅供参考
本文提出一种可重构SDR接收机架构，通过增强前端频率选择性，支持带内和带间载波聚合。该架构允许根据信号场景配置不同的滤波轮廓，从而在存在多种期望和非期望信号的宽频率范围内保持高动态范围。解决了未来无线通信中多频带聚合带来的动态范围挑战。
The demand for increased wireless data throughput in future wireless communication and the lack of available wide contiguous frequency bands inspire the concept of aggregating multiple frequency bands in a SoftwareDefined Radio (SDR). A major challenge for such an SDR receiver is maintaining a high dynamic range in the presence of various desired and undesired signals spread over a wide frequency range. This paper introduces a receiver architecture that allows the RF front-end to be configured with various filtering profiles depending on signal scenarios while supporting intra-band multichannel carrier aggregation (contiguous and non-contiguous) with only one frequency synthesizer. Recent work has exploited the passive mixer (N-path filter) to enhance the RF front-end selectivity [1,2]. In a typical N-path-filter-based receiver, the 1st-order lowpass input impedance of the baseband Transimpedance Amplifier (TIA) is
Run Chen, Hossein Hashemi
University of Southern California, Los Angeles, CA